new Genus of Frogs. 43 



rior attachment. Palatine teeth forming a long transverse 

 series narrowly interrupted in the middle. Two denticulate 

 transverse dermal folds in front of the pharynx. Tympanum 

 hidden. Fingers free, toes webbed at the base, the tips not 

 dilated ; outer metatarsal bound together. Coracoids strong ; 

 praecoracoids very weak, ligamentous ; no omosternum ; 

 sternum a large cartilaginous plate. Diapophyses of sacral 

 vertebra moderately dilated. 



Colpoglossus Brooksii. (PI. II.) 



Habit very stout ; head strongly depressed, once and two 

 thirds as broad as long; eye small, interorbital width three 

 times the widtli of the upper eyelid. Fingers short, obtusely 

 pointed, first shorter than second ; subarticular tubercles 

 indistinct ; a large, oval, inner metacarpal tubercle. Toes 

 short, blunt, with a very short basal web ; subarticular 

 tubercles feebly prominent; a rather large and very promi- 

 nent inner metatarsal tubercle. The tarso-metatarsal articu- 

 lation reaches the eye. Skin of head and body granulate, of 

 belly and limbs smooth. Yellowish above, elegantly marked 

 with dark brown lines, which form a network on the sides 

 and limbs; a )-( shaped dark brown, light-edged marking 

 on the head and nape, each of the longitudinal branches 

 bifurcating in front and behind; two chains of small black 

 spots, some with light centre, along the middle of the back ; 

 lower parts white, throat with wrinkle-like transverse brown 

 lines. 



From snout to vent 50 mm. 



A single specimen from Bidi, Sarawak, discovered by 

 Mr. Cecil J. Brooks in a hole whilst prospecting, and pre- 

 sented by him to the British Museum. 



The discovery of a member of the family DyscophidaB in 

 Borneo is a very important addition to our knowledge, all 

 the members of this natural group being inhabitants of Mada- 

 gascar, with the exception of the Burmese Galluella yuttulata. 

 So many genera and species have been added to this family 

 since the publication of the British Museum Catalogue (1882) 

 that a complete list, such as is here appended, will be welcome 

 to herpetologists and to students of geographical distribution. 



I. Pupil vertical ; palatine teeth in long transverse series. 

 A. Preecoracoids ossified ; tips of fingers and toes not dilated. 

 a. Sternum large. 

 1. Dyscophus, Grand. 1872.— Madagascar. 



1. insularis, Grand. 1872, 



2. Gidneti, Grand. 1875. 



3. Antongilii, Grand. 1877. 



